Battery charging unit



July 4, 1933.

H. RUSBULT 1,916,587

BATTERY CHARGING UNIT Filed March 9, 1932 3 Sheets-Sheet l July 4, 1933.H. RUSBULT BATTERY CHARGTNG UNIT Filed March 9, 1952 3 Sheets-Sheetl 2July 4, y1933. H RUSBULT 1,916,587

BATTERY CHARGTNG UNIT Filed March 9, 1932 3 Sheets-Sheei 3 5 InventorZrerZjZzzLs'zzZ/w f1 Homey PatentedJuly 4, 1933 Y l UNITED y STATESHER-BERT RUsIaUL'r, or wILLIAMsBUnG, IOWA BATTERY cHAitGING NIT lApplication led'March 9,

for installation in motor vehicles, whereby to enable the charging ofthe battery of the' vehicle from a convenient electrical plug connectionin a garage or other place, during short periods of idleness ,of thevehicle, whereby to enable conveniently maintaining a fully chargedcondition of the battery of the vehicle at all times. v

Other objects and advantages of my invention will be apparent from areading of the following description of the-drawings, wherein forpurposes of illustration I have shown a preferred embodiment of theinvention.

In the drawings l Figure 1 is a general front elevational view of anembodiment of my invention.

Figure 2 is an end view thereof taken from the left of Figure 1.

Figure 3 is a top plan view of Figure 1, 25 with the cover of the casingremoved.

Figure 4 is a transverse vertical central sectional view throughFigure 1. Y

'Figure 5 is a transverse vertical sectional view taken at one side ofthe reel.

Figure 6 is an end view of one of the spring retainers of the reel.

Figure7 is a longitudinal vertical sectional view through the reel. v

Referring in detail to the drawings, where'- 35 in like numerals referto like parts throughout the same, the numeral 5 refers generally toalconventional type of transformer, the numeral 6 to the conventionaltype of ourrent rectifier, andthe numeral 7 indicates a reel casingmounted between the rectifier and the transformer on a base 8.

From one side of the base 8 rises avertical plate 9 which has bolts orthe like 10 projecting therefrom whereby the entire de- 45. vice may bemounted upon a convenient por- Y tion of an automobile or similarvehicle, such as on the dash board or upon a frame member, whereby tosolidly mount the devicel conveniently close to the battery of thevehicle. Within the casing 7 which is of generally ltion of the spoolor'reel while maintaining `'with the remaining elements of the device.

1932. sei-iai No. 597,820. y'

rectangular form there is rotatably mounted a reel 11 which is intheformof a hollow spool having stu-b aXles 12 and 13 journaled indielectric blocks 14, 15 secured to opposite end walls of the casing 7as shown. The55y' dielectric blocks 14, 15 are secured by bolts 16, 17which carry'spac'ers 18, 19 for spacing the dielectric blocks 14,15 fromthe cas-` ing walls. This arrangement is particularly well shown inFigure?. `Suitable return spring means is incorpo'rated'in the spoolwherebythe doublecord 20 vwillbe suitablyv released upon pulling'thesame outwardly through the bushing' 21 and through the open ingv 22 inthe upright vplate 9 and will be 65 rewound upon the reelby automaticrotation Ithereof when released. f.

Suitable spring contact meanscomprising anexterior metallic" leaf 23Vand an interior conforming dielectric leaf 2414 secured tolongitudinally spaced flanges 25, 26 carried by the spool are 'arrangedfor rotatable contact with stationary contact elements 27 carried on thedielectric blocks 1/1, 15, as will be seen in Figures 6 and 5. TheContact elements 27 have 'a square aperture in whichV the .stub shaft 12rotates withoutl contacting them, and the leaves 23, 24 of therotatablevcontact members also have apertures 28 Whose edgesy aresimilarly spaced out of Contact ywith the shaft 12; Thisarrangementpermits rotaelectrical 'connection at each side thereof It willbeobserved that the double cord 20 5* has one of its cords connected tothe contact leaves on the. flange 25, while the remaining 'cord isconnected to the leaves carried-by the iiange 26 as seen particularlywell in Figures 9 v3 and ll. A0Y

Examination of Figure 8 will disclose that one set of cords from therectifier indicated by the numerals 29, 30 are connected respectivelyVwith the contacts 27 which correspond to the spool/contact leaves,while the remaining leads 31 fromthe rectifier 'are car"A ried around orthrough the casing forconnection with the transformer, and that theleads 32 that is the supply leads are led directly lto the battery ofthe vehicle to which 10Q f they are permanently connected, the` negativeterminal'being connected usually with' the frame of the ear and thepositive con-v nected to the battery in a Well known man- It will besary to do when it is desired to charge the ybattery whilelgthe vehicleisstand-ingl near Va suitable source of electricity, is to connecttheplug 33 on the reel cord 20 kin the nearest socket,"by unre'eling thecord from the reel by pulling upon the same. yWhen itis desired to ceasecharging the battery, all that itis necessary to do is tofremove theplug 33, 'fromthe supply socket, and release the reel L intothe ycasingandwoun'd upon the reel 11.

y be encased' ina suitable box like ormation,

cord, whereupon the reel cordvvillbe Vdrawn Y 1f desired the entiredevice described may provided with 'l suilicient. ventilation means.

'Y Alid 434' may beprovided for the casing 5; The needl of a Vdevice-,according tothe principle .of my:v 'inventionzisr evident .atlthe' present time since the introduction-and pop-v i ilan use of'electrically operated devices on autoinob1les, such Vas` radios,heaters,ffree Wheeling devifces'and the like* .which enormouslyvincrease the normaldrainrupon the continually properly charged,vvitlioutresorting rto vleaving thefbattery at a Vbattery* chargingstation kwith consequent large exat f battery of thel lautomobile.

of they automobileso as to maintain the same lobserved that all that isneces-l` Y y It lisla distinct, Y* advantage to be enabledin alconvenientand' f inexpensivelmanner to recharge the battery' pense andtrouble and loss of time, and the l inconvenience possibly resultingy,from the` use of rental batteries.

Th'ough-Irhave shown and described herein i a preferred embodiment ofthe invention, it

is towbe definitely understood that VI ldo not desire yto limit the aplication ofthe inven-v tionthereto, but any c range orchanges may bemade in material and structure and ar-` rangement of parts consistentWith the spirit joined claim.- Y What is claimed is Ak battery chargingunit for a of the inventionand the scope ofthe subrectifier, Y andextensible inputy v`connection meanjson the base, said extensible inputconnection nieanseomprising aV easing, va Areel rotatably mountedvvithin'thei'casing, trans-l 'former vinput conductors Windable onthereel and vehicle hav` ,ing a battery,.sa`id 'unit comprising a basemountable on the vehicle,y a transformer, a

connected With the Contact members, and

output conductorspleading from the rectifier forselective connection to`the battery, and

. connector means on` the outer endsof the reel.

input conductors for connectionjto any available current outlet forcharging the battery.

In testimonywhereof I affix my signature.'V

' i HERBERT Rijs'uuifi.Y

